1. (a.) Full of caverns; resembling a cavern or large cavity; hollow.

2. (a.) Filled with small cavities or cells.

3. (a.) Having a sound caused by a cavity.

abysmal abyssal boat-shaped boatlike bottomless bowl-shaped bowllike cavelike commodious concave concaved craterlike cup-shaped cupped cymbiform deep as hell dish-shaped dished dishing dishlike fathomless funnel-breasted funnel-chested funnel-shaped gaping hollow hollowed incurved incurving incurvous infundibular infundibuliform navicular naviform plumbless plunging retiring retreating reverberant saucer-shaped scaphoid scyphate sepulchral soundless spoonlike sunk sunken unfathomable unfathomed unsounded vast without bottom yawning